/*****************************************************************************\
 *  task_cgroup_devices.h - devices cgroup subsystem primitives for task/cgroup
 *****************************************************************************
 *  Copyright (C) 2009 CEA/DAM/DIF
 *  Written by Matthieu Hautreux <matthieu.hautreux@cea.fr>
 *
 *  This file is part of Slurm, a resource management program.
 *  For details, see <https://slurm.schedmd.com/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  Slurm is free software; you can redistribute it and/or modify it under
 *  the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
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 *  the program, then also delete it here.
 *
 *  Slurm is distributed in the hope that it will be useful, but WITHOUT ANY
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 *  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
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 *
 *  You should have received a copy of the GNU General Public License along
 *  with Slurm; if not, write to the Free Software Foundation, Inc.,
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\*****************************************************************************/

#ifndef _TASK_CGROUP_DEVICES_H_
#define _TASK_CGROUP_DEVICES_H_

/* initialize devices subsystem of task/cgroup */
extern int task_cgroup_devices_init(void);

/* release devices subsystem resources */
extern int task_cgroup_devices_fini(void);

/* create user/job/jobstep devices cgroups */
extern int task_cgroup_devices_create(stepd_step_rec_t *step);

/* add a task to the devices cgroup */
extern int task_cgroup_devices_add_pid(stepd_step_rec_t *step, pid_t pid,
				       uint32_t taskid);

/* constrain the devices in the task */
extern int task_cgroup_devices_constrain(stepd_step_rec_t *step,
					 uint32_t node_tid,
					 uint32_t global_tid);

/* add a pid to the extern step devices cgroup */
extern int task_cgroup_devices_add_extern_pid(pid_t pid);

#endif
